Just a note for my AIX folks out there (and I know there's at least one!): When NSDv2 (version 1403) disks are defined in AIX we *don't* create GPTs on those LUNs.
However with GPFS (Spectrum Scale) installed on AIX we will place the NSD name in the "VG" column of lsvg. But yes, we've had situations of customers creating new VGs on existing GPFS LUNs (force!) and destroying file systems. ------------------ Glen Corneau Power Systems Washington Systems Center [email protected] From: "Felipe Knop" <[email protected]> To: gpfsug main discussion list <[email protected]> Date: 07/28/2017 07:45 AM Subject: Re: [gpfsug-discuss] NSD V2 vs V1 - how can you tell? Sent by: [email protected] Bob, I believe the NSD format version (v1 vs v2) is shown in the " format version" line that starts with "NSDid" : # mmfsadm test readdescraw /dev/dm-11 NSD descriptor in sector 64 of /dev/dm-11 NSDid: 9461C0A85788693A format version: 1403 Label: It should say "1403" when the format is v2. Felipe ---- Felipe Knop [email protected] GPFS Development and Security IBM Systems IBM Building 008 2455 South Rd, Poughkeepsie, NY 12601 (845) 433-9314 T/L 293-9314 From: "Oesterlin, Robert" <[email protected]> To: gpfsug main discussion list <[email protected]> Date: 07/28/2017 07:47 AM Subject: Re: [gpfsug-discuss] NSD V2 vs V1 - how can you tell? Sent by: [email protected] Hi Scott This refers to the file system format which is independent of the NSD version number. File systems can be upgraded but all the NSDs are still at V1. For instance, here is an NSD I know is still V1: [root@gpfs2-gpfs01 ~]# grep msa0319VOL2 volmaps msa0319VOL2 mpathel (3600c0ff0001497e259ebac5001000000) dm-19 14T sdad 0[active][ready] sdft 1[active][ready] sdam 2[active][ready] sdgc 3[active][ready] [root@gpfs2-gpfs01 ~]# mmfsadm test readdescraw /dev/dm-19 | grep " original format" original format version 1001, cur version 1600 (mgr 1600, helper 1600, mnode 1600) The file system version is current however. Bob Oesterlin Sr Principal Storage Engineer, Nuance
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